Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/80-15 | 365/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.47 (901) | 29.37 (746) | -6.1 (-155) -17.2% |
| Width inches (mm) | 12.8 (325) | 14.37 (365) | 1.57 (40) 12.3% |
| Circum. inches (mm) | 111.44 (2830.57) | 92.27 (2343.63) | -19.17 (-486.95) -17.2% |
| Sidewall Height inches (mm) | 10.24 (260) | 7.19 (182.5) | -3.05 (-77.5) -29.8% |
| Revolutions per mile (km) | 568.56 (353.28) | 686.69 (426.69) | 118.13 (73.4) 20.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.56 mph (26.65 km/h) |
| 25 mph (40.23 km/h) | 20.7 mph (33.31 km/h) |
| 30 mph (48.28 km/h) | 24.84 mph (39.97 km/h) |
| 35 mph (56.33 km/h) | 28.98 mph (46.64 km/h) |
| 40 mph (64.37 km/h) | 33.12 mph (53.3 km/h) |
| 45 mph (72.42 km/h) | 37.26 mph (59.96 km/h) |
| 50 mph (80.47 km/h) | 41.4 mph (66.62 km/h) |
| 55 mph (88.51 km/h) | 45.54 mph (73.29 km/h) |
| 60 mph (96.56 km/h) | 49.68 mph (79.95 km/h) |
| 65 mph (104.61 km/h) | 53.82 mph (86.61 km/h) |
| 70 mph (112.65 km/h) | 57.96 mph (93.27 km/h) |
| 75 mph (120.7 km/h) | 62.1 mph (99.94 km/h) |
| 80 mph (128.75 km/h) | 66.24 mph (106.6 km/h) |
| 85 mph (136.79 km/h) | 70.38 mph (113.26 km/h) |
| 90 mph (144.84 km/h) | 74.52 mph (119.92 km/h) |
| 95 mph (152.89 km/h) | 78.66 mph (126.59 km/h) |
| 100 mph (160.93 km/h) | 82.8 mph (133.25 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1747 | 2030 | 2186 | 2283 | 2387 | 2461 | 2543 | 2640 | 2774 | 2908 | 3056 | 3175 | 3391 | 3629 | 3815 | 3934 | 4001 | 4246 | 4588 | 5332 |
Better Fuel Economy Factory Ratios Increased Power
